Roll src/third_party/catapult/ a2bac5f24..b1c8c53e1 (1 commit).

https://chromium.googlesource.com/external/github.com/catapult-project/catapult.git/+log/a2bac5f24b7e..b1c8c53e1d00

$ git log a2bac5f24..b1c8c53e1 --date=short --no-merges --format='%ad %ae %s'
2016-09-09 ulan Add a metric to track the percentage of GC time in V8.Execute tasks.

TBR=catapult-sheriff@chromium.org

Review-Url: https://codereview.chromium.org/2316273005
Cr-Commit-Position: refs/heads/master@{#417569}

DEPS

@@ -92,7 +92,7 @@ vars = {
   # Three lines of non-changing comments so that
   # the commit queue can handle CLs rolling catapult
   # and whatever else without interference from each other.
-  'catapult_revision': 'a2bac5f24b7ecb9996b8ef4ae9ffc177fc6db0bd',
+  'catapult_revision': 'b1c8c53e1d00f2088f5f3b0d8835566366af03f0',
   # Three lines of non-changing comments so that
   # the commit queue can handle CLs rolling libFuzzer
   # and whatever else without interference from each other.